Oil Resistant NBR Automotive Fuel Hose HY-RH-645

Oil Resistant NBR Automotive Fuel Hose gallery

Rubber Hoses

Oil Resistant NBR Automotive Fuel Hose HY-RH-645

Oil-resistant NBR automotive fuel hose. NBR's resistance to oil and fuel is the reason it is the fuel-line compound, and reinforcement plus inner diameter are confirmed against the application before quoting.

Category	Rubber Hoses
Model	HY-RH-645
Brand	huiying
Source reference	#17461
Reference price	USD 10–60 (reference only)

Data source: congbenfilter.com catalog · status reference (view source). OE numbers, cross-references, material and fitment are as published by the source catalog and are confirmed per order.

Dimensions, filtration media and efficiency are confirmed per OE application. The price range shown is a reference only — final pricing depends on quantity, specification and shipping terms. Tell us your OE / cross-reference number for an exact match.

About this rubber hoses

Application, scenarios, technical, procurement and maintenance guidance for HY-RH-645.

Application

The HY-RH-645 is an oil-resistant NBR automotive fuel hose.

NBR's resistance to oil and fuel is the reason it is the fuel-line compound, and reinforcement plus inner diameter are confirmed against the application before quoting.

Application scenarios

Automotive fuel lines, where NBR's fuel resistance is the deciding factor.
Oil transfer circuits, where the compound must resist swelling.
Markets with hot climates, where NBR holds up under fuel and oil at temperature.

Technical notes

NBR resists oil and fuel, which is why it is the fuel-line compound.
Reinforcement lets the hose hold pressure and vacuum without collapsing.
Inner diameter and reinforcement are confirmed per application.

Procurement notes

For fuel-system importers this is the NBR fuel line — specify the bore, pressure and compound up front.
Within the rubber-hoses category, the HY-RH-645 is the NBR fuel entry, distinct from the HY-RH-641 and HY-RH-603 NBR lines and the EPDM/silicone lines — confirm the application rather than interchanging.

Selection notes

Specify NBR and confirm the inner diameter and reinforcement.
State the working temperature and pressure.
Request the dimensional tolerance on the bore.

Maintenance

Inspect for swelling, hardening or cracks in fuel service.
Replace on a time or mileage schedule rather than waiting for failure.
Confirm the clamps are tight and the hose is not kinked.

Buyer's note.

The HY-RH-645 is the NBR fuel hose — specify the bore, pressure and compound up front, and buy on consistency.

Specification & Ordering

Procurement-level details for HY-RH-645. Values marked "Confirm per order specification" are finalised against your OE / cross-reference number and order quantity.

OE number	Confirm per order specification
Cross-reference	Confirm per order specification
Material	Confirm per order specification
Dimensions	Confirm per order specification
Vehicle fitment	Confirm per order specification
Vehicle application	Cooling, fuel and air-transfer circuits (confirm per application)
Filter media	EPDM / NBR / silicone compound (confirmed per order)
MOQ	Confirm per order specification
Lead time	Confirm per order specification
OEM & private label	Available — confirm per order specification
Quality documents	Available on request — confirm per order specification

Vehicle Fitment & Brand Association

Rubber hoses are matched by circuit (coolant, fuel, air), compound and inner diameter. The references below are common application examples; the exact hose is confirmed per application.